Aggregate and Generate

IP Mobility Quick and Dirty

Advantages: Allows mobility of a single or multiple addresses onto a different subnet. Essentially, this allows you to take an IP address (10.0.0.1) and put it on a different subnet (172.16.0.1/24) and still maintain the 10.0.0.1 address.

Pros: Easy to setup. Mobility of IP addresses.

Cons: Does not work on the 4500 L3 switches running (cat4500e-ENTSERVICES-M), Version 12.2(54)SG. 6500 switches have not been tested. Potential to allow any IP address on the configured mobility subnet. Essentially, if I plug a device with any IP address I want it will be advertised out from the mobility subnet. You can create acl’s to limit this.

Limitations:Do not move the IP address more than once per second. Potential additional load on the routers. The router that advertises the mobile client out will advertise a host route.